ap05_frq_biology_b - AP® Biology 2005 Free-Response...

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Unformatted text preview: AP® Biology 2005 Free-Response Questions Form B The College Board: Connecting Students to College Success The College Board is a not-for-profit membership association whose mission is to connect students to college success and opportunity. Founded in 1900, the association is composed of more than 4,700 schools, colleges, universities, and other educational organizations. Each year, the College Board serves over three and a half million students and their parents, 23,000 high schools, and 3,500 colleges through major programs and services in college admissions, guidance, assessment, financial aid, enrollment, and teaching and learning. Among its best-known programs are the SAT®, the PSAT/NMSQT®, and the Advanced Placement Program® (AP®). The College Board is committed to the principles of excellence and equity, and that commitment is embodied in all of its programs, services, activities, and concerns. Copyright © 2005 by College Board. All rights reserved. College Board, AP Central, APCD, Advanced Placement Program, AP, AP Vertical Teams, Pre-AP, SAT, and the acorn logo are registered trademarks of the College Entrance Examination Board. Admitted Class Evaluation Service, CollegeEd, Connect to college success, MyRoad, SAT Professional Development, SAT Readiness Program, and Setting the Cornerstones are trademarks owned by the College Entrance Examination Board. PSAT/NMSQT is a registered trademark of the College Entrance Examination Board and National Merit Scholarship Corporation. Other products and services may be trademarks of their respective owners. Permission to use copyrighted College Board materials may be requested online at: http://www.collegeboard.com/inquiry/cbpermit.html. Visit the College Board on the Web: www.collegeboard.com. AP Central is the official online home for the AP Program and Pre-AP: apcentral.collegeboard.com. 2005 AP® BIOLOGY FREE-RESPONSE QUESTIONS (Form B) BIOLOGY SECTION II Planning Time—10 minutes Writing Time—90 minutes Directions: Answer all questions. Answers must be in essay form. Outline form is not acceptable. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is important that you read each question completely before you begin to write. Write all your answers on the pages following the questions in the goldenrod booklet. 1. Survival of organisms depends on adaptive behavior and species interactions. (a) Behaviors of organisms may be influenced by environmental factors. Select two of the following types of behavior. For each type, explain (i) how the environment affects the behavior, and (ii) why this behavior increases the survivorship of individuals of a species. • Taxis/Kinesis • Migration • Courtship (b) Interactions among populations may have an effect on densities of the species that interact. Predation represents an important interaction among populations. The curves below depict the population densities of three species: a small herbivore, a larger herbivore, and a carnivore. Identify which curve represents which of the species listed, and justify your answer by describing the changes in the population densities of these three species over time. 2. In the evolution of organisms, major adaptations arose in certain groups, opening new evolutionary possibilities. For two of the following types of organisms, discuss the evolutionary significance of the features listed. (a) Flowering plants: flowers, fruits and seeds, and broad leaves (b) Flatworms: three germ layers, bilateral symmetry, and cephalization (c) Segmented worms: segmentation, coelom, and digestive system (d) Reptiles: amniotic eggs, waterproof skin, and well-developed lungs Copyright © 2005 by College Entrance Examination Board. All rights reserved. Visit apcentral.collegeboard.com (for AP professionals) and www.collegeboard.com/apstudents (for AP students and parents). GO ON TO THE NEXT PAGE. 2 2005 AP® BIOLOGY FREE-RESPONSE QUESTIONS (Form B) 3. Protein synthesis is vital for cell growth and metabolism. (a) Describe transcription and translation. (b) Identify similarities between transcription and translation. (c) Identify differences between transcription and translation. (d) Describe structural changes that can occur to a protein after translation to make it function properly. 4. Water potential in potato cells was determined in the following manner. The initial masses of six groups of potato cores were measured. The potato cores were placed in sucrose solutions of various molarities. The masses of the cores were measured again after 24 hours. Percent changes in mass were calculated. The results are shown below. Molarity of Sucrose in Beaker 0.0 M 0.2 0.4 0.6 0.8 1.0 Percent Change in Mass 18.0 5.0 -8.0 -16.0 -23.5 -24.0 (a) Graph these data on the axes provided. From your graph, find the apparent molar concentration (osmolarity) of the potato core cells. (b) What are the components of water potential, and why is water potential important for the movement of water in plants? (c) Predict what would happen to typical animal cells placed in 0.0 M and 1.0 M sucrose solutions, and explain your prediction. Copyright © 2005 by College Entrance Examination Board. All rights reserved. Visit apcentral.collegeboard.com (for AP professionals) and www.collegeboard.com/apstudents (for AP students and parents). GO ON TO THE NEXT PAGE. 3 2005 AP® BIOLOGY FREE-RESPONSE QUESTIONS (Form B) END OF EXAMINATION Copyright © 2005 by College Entrance Examination Board. All rights reserved. Visit apcentral.collegeboard.com (for AP professionals) and www.collegeboard.com/apstudents (for AP students and parents). 4 ...
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This note was uploaded on 11/23/2009 for the course BIOLOGY 1101 taught by Professor Keith during the Winter '05 term at The University of Oklahoma.

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